RS-232 link at 250 kbps — active production, no LTB signal
Data rate is 250 kbps, which covers the common 115.2 kbps ceiling with margin — the 500 mV receiver hysteresis cleans up noisy lines from long cable runs or industrial backplanes. Supply voltage spans 3V to 5.5V, so it sits on either a 3.3V or 5V rail without a separate level translator.
Supply rail and temperature — BOM-fit check
The 3V to 5.5V supply range means this part works in mixed-voltage designs where the MCU runs at 3.3V and the RS-232 bus expects 5V levels. For industrial or outdoor use where the ambient exceeds 70°C, the ICL3221EIAZ-T sibling extends the range to -40°C to 85°C in a different package — same core transceiver, wider thermal envelope.
Lifecycle and compliance — no obsolescence pressure
Sourced to order against BOM quantities through franchised and independent channels.